Performance
Notes on WordPress performance, technical SEO and the craft of web engineering. Written from production, not theory.
Page cache, object cache, edge cache: which one you actually need
Page, object and edge caches solve different problems. What each one stores, who it helps, its trade-offs and the order to add them.
Core Web Vitals: field data vs. lab data
Why your PageSpeed score and your CrUX report disagree, and which of the two Google uses for Core Web Vitals.
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